Inclusive search for highly boosted Higgs bosons decaying to bottom quark-antiquark pairs in proton-proton collisions at s $$ \sqrt{s} $$ = 13 TeV
Abstract A search for standard model Higgs bosons (H) produced with transverse momentum (pT) greater than 450 GeV and decaying to bottom quark-antiquark pairs ( b...
| Main Authors: | , , , , , , , , , , , , , , , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | English |
| Published: |
Springer Berlin Heidelberg
2021
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| Online Access: | https://hdl.handle.net/1721.1/131822 |
| _version_ | 1826208309747646464 |
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| author | Sirunyan, A. M Tumasyan, A. Adam, W. Ambrogi, F. Bergauer, T. Dragicevic, M. Erö, J. Escalante Del Valle, A. Frühwirth, R. Jeitler, M. Krammer, N. Lechner, L. Liko, D. Madlener, T. Mikulec, I. Pitters, F. M Rad, N. Schieck, J. |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Sirunyan, A. M Tumasyan, A. Adam, W. Ambrogi, F. Bergauer, T. Dragicevic, M. Erö, J. Escalante Del Valle, A. Frühwirth, R. Jeitler, M. Krammer, N. Lechner, L. Liko, D. Madlener, T. Mikulec, I. Pitters, F. M Rad, N. Schieck, J. |
| author_sort | Sirunyan, A. M |
| collection | MIT |
| description | Abstract
A search for standard model Higgs bosons (H) produced with transverse momentum (pT) greater than 450 GeV and decaying to bottom quark-antiquark pairs (
b
b
¯
$$ \mathrm{b}\overline{\mathrm{b}} $$
) is performed using proton-proton collision data collected by the CMS experiment at the LHC at
s
$$ \sqrt{s} $$
= 13 TeV. The data sample corresponds to an integrated luminosity of 137 fb−1. The search is inclusive in the Higgs boson production mode. Highly Lorentz-boosted Higgs bosons decaying to
b
b
¯
$$ \mathrm{b}\overline{\mathrm{b}} $$
are reconstructed as single large-radius jets, and are identified using jet substructure and a dedicated b tagging technique based on a deep neural network. The method is validated with Z →
b
b
¯
$$ \mathrm{b}\overline{\mathrm{b}} $$
decays. For a Higgs boson mass of 125 GeV, an excess of events above the background assuming no Higgs boson production is observed with a local significance of 2.5 standard deviations (σ), while the expectation is 0.7. The corresponding signal strength and local significance with respect to the standard model expectation are μH = 3.7 ± 1.2(stat)
−
0.7
+
0.8
$$ {}_{-0.7}^{+0.8} $$
(syst)
−
0.5
+
0.8
$$ {}_{-0.5}^{+0.8} $$
(theo) and 1.9 σ. Additionally, an unfolded differential cross section as a function of Higgs boson pT for the gluon fusion production mode is presented, assuming the other production modes occur at the expected rates. |
| first_indexed | 2024-09-23T14:03:47Z |
| format | Article |
| id | mit-1721.1/131822 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T14:03:47Z |
| publishDate | 2021 |
| publisher | Springer Berlin Heidelberg |
| record_format | dspace |
| spelling | mit-1721.1/1318222023-12-22T18:45:40Z Inclusive search for highly boosted Higgs bosons decaying to bottom quark-antiquark pairs in proton-proton collisions at s $$ \sqrt{s} $$ = 13 TeV Sirunyan, A. M Tumasyan, A. Adam, W. Ambrogi, F. Bergauer, T. Dragicevic, M. Erö, J. Escalante Del Valle, A. Frühwirth, R. Jeitler, M. Krammer, N. Lechner, L. Liko, D. Madlener, T. Mikulec, I. Pitters, F. M Rad, N. Schieck, J. Massachusetts Institute of Technology. Department of Physics Abstract A search for standard model Higgs bosons (H) produced with transverse momentum (pT) greater than 450 GeV and decaying to bottom quark-antiquark pairs ( b b ¯ $$ \mathrm{b}\overline{\mathrm{b}} $$ ) is performed using proton-proton collision data collected by the CMS experiment at the LHC at s $$ \sqrt{s} $$ = 13 TeV. The data sample corresponds to an integrated luminosity of 137 fb−1. The search is inclusive in the Higgs boson production mode. Highly Lorentz-boosted Higgs bosons decaying to b b ¯ $$ \mathrm{b}\overline{\mathrm{b}} $$ are reconstructed as single large-radius jets, and are identified using jet substructure and a dedicated b tagging technique based on a deep neural network. The method is validated with Z → b b ¯ $$ \mathrm{b}\overline{\mathrm{b}} $$ decays. For a Higgs boson mass of 125 GeV, an excess of events above the background assuming no Higgs boson production is observed with a local significance of 2.5 standard deviations (σ), while the expectation is 0.7. The corresponding signal strength and local significance with respect to the standard model expectation are μH = 3.7 ± 1.2(stat) − 0.7 + 0.8 $$ {}_{-0.7}^{+0.8} $$ (syst) − 0.5 + 0.8 $$ {}_{-0.5}^{+0.8} $$ (theo) and 1.9 σ. Additionally, an unfolded differential cross section as a function of Higgs boson pT for the gluon fusion production mode is presented, assuming the other production modes occur at the expected rates. 2021-09-20T17:30:25Z 2021-09-20T17:30:25Z 2020-12-11 2020-12-20T04:51:32Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/131822 Journal of High Energy Physics. 2020 Dec 11;2020(12):85 PUBLISHER_CC en https://doi.org/10.1007/JHEP12(2020)085 Creative Commons Attribution https://creativecommons.org/licenses/by/4.0/ The Author(s) application/pdf Springer Berlin Heidelberg Springer Berlin Heidelberg |
| spellingShingle | Sirunyan, A. M Tumasyan, A. Adam, W. Ambrogi, F. Bergauer, T. Dragicevic, M. Erö, J. Escalante Del Valle, A. Frühwirth, R. Jeitler, M. Krammer, N. Lechner, L. Liko, D. Madlener, T. Mikulec, I. Pitters, F. M Rad, N. Schieck, J. Inclusive search for highly boosted Higgs bosons decaying to bottom quark-antiquark pairs in proton-proton collisions at s $$ \sqrt{s} $$ = 13 TeV |
| title | Inclusive search for highly boosted Higgs bosons decaying to bottom quark-antiquark pairs in proton-proton collisions at s $$ \sqrt{s} $$ = 13 TeV |
| title_full | Inclusive search for highly boosted Higgs bosons decaying to bottom quark-antiquark pairs in proton-proton collisions at s $$ \sqrt{s} $$ = 13 TeV |
| title_fullStr | Inclusive search for highly boosted Higgs bosons decaying to bottom quark-antiquark pairs in proton-proton collisions at s $$ \sqrt{s} $$ = 13 TeV |
| title_full_unstemmed | Inclusive search for highly boosted Higgs bosons decaying to bottom quark-antiquark pairs in proton-proton collisions at s $$ \sqrt{s} $$ = 13 TeV |
| title_short | Inclusive search for highly boosted Higgs bosons decaying to bottom quark-antiquark pairs in proton-proton collisions at s $$ \sqrt{s} $$ = 13 TeV |
| title_sort | inclusive search for highly boosted higgs bosons decaying to bottom quark antiquark pairs in proton proton collisions at s sqrt s 13 tev |
| url | https://hdl.handle.net/1721.1/131822 |
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